The evolution of the Mecklenburg Bay environment in the Holocene in the light of multidisciplinary investigations of the sediment cores

Kostecki, Robert; Janczak-Kostecka, Beata; Endler, Michael; Moros, Matthias

doi:10.1016/j.quaint.2015.07.007

Cited by 13 publications

(26 citation statements)

References 36 publications

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“…The Ancylus Lake stage is marked by the presence of layers of sandy silt, gyttja, and peat typical of lacustrine and swampy environments. Similarly to the findings reported by Hofmann and Winn (2000), the sediment record analyzed by Kostecki et al (2015) indicates the presence of an isolated shallow lake. This freshwater reservoir, inferred to have existed between 8800 and 7700 cal years BP, experienced weak seawater inflows depositing sandy silt and mud, which reflects the initial Littorina Sea stage (Witkowski et al 2005;Rößler et al 2011;Kostecki et al 2015).…”

Section: Introductionsupporting

confidence: 78%

“…The Mecklenburg Bay (MB), an embayment located in the south-western part of the Baltic Sea, is one of the critical areas in which post-glacial changes reconstructed so far appear to be out of synchrony with changes inferred to occur elsewhere in the Baltic Sea (Kortekaas et al 2007;Kostecki et al 2015;Heinrich et al 2018). Located between the Danish Straits -a transitional area connecting the Baltic Sea with the North Sea -and the Baltic Sea proper, MB is more or less directly exposed to saline water inflows from the North Sea, the inflows being a major driver of current changes in the Baltic Sea ecosystem (Snoeijs-Leijonmalm & Andrén 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Following up on the earlier work of other authors (Witkowski et al 2005;Rößler 2006;Rößler et al 2011), Kostecki et al (2015) used an array of palaeoceanographic proxies (including diatom record, geochemistry and lithology), in addition to acoustic profiling and radiocarbon dating of three cores collected at different sites in MB, to reconstruct the timeline of some fundamental changes in the area. In brief, their analyses demonstrated that the MB sediments recorded the sequence of the Baltic Ice Lake (BIL), the Ancylus Lake, and the Littorina and Post-Littorina Sea stages.…”

Section: Introductionmentioning

confidence: 99%

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The foraminiferal record in the Holocene evolution of the Mecklenburg Bay (south-western Baltic Sea)

Kostecki

Radziejewska

2021

Oceanological and Hydrobiological Studies

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Foraminiferal assemblages were analyzed in a 620-cm long core retrieved from the central part of the Mecklenburg Bay (MB, south-western Baltic Sea) to aid in the reconstruction of environmental changes occurring in the area during the Holocene and to complement a set of previously investigated palaeoenvironmental proxies. A total of five foraminifera-based stratigraphic units were identified, including an initial 80-cm thick layer devoid of foraminifera. The next two units featured an increasing abundance of the foraminiferal assemblage dominated by the calcareous Ammonia group species. Nearly all the calcareous foraminifera found in the core were decalcified. Following the maximum abundance within the 470–410 cm layer, the foraminiferal abundance declined sharply and the assemblage’s dominance structure changed to domination of the agglutinated foraminiferal species, Eggerelloides scaber, which continued up to the top of the core and marked a pronounced shift in environmental conditions (shallower depth, lower salinity, more dynamic sedimentation conditions). The foraminifera-based stratigraphy of the core proved to be complementary to that emerging from previous analyses of diatoms and sediment geochemistry.

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Section: Introductionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The foraminiferal record in the Holocene evolution of the Mecklenburg Bay (south-western Baltic Sea)

Kostecki

Radziejewska

2021

Oceanological and Hydrobiological Studies

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“…Facies analysis and radiocarbon dating on core T4 indicate that the transgressive infilling of the outer part of the bay started before 8200 cal. years BP, as observed in coastal bays and estuaries around the globe (Woodroffe et al, 1993;Maddox et al, 2008;Rodriguez et al, 2008;Weschenfelder et al, 2014;Boski et al, 2008Boski et al, , 2015Kostecki et al, 2015;Masuda and Itomoto, 2015;Borges and Nittrouer, 2016). of the Bay-head delta as a result of previous sediment infilling during the transgressive phase along the study area.…”

Section: Discussionsupporting

confidence: 52%

Northeast Guanabara Bay and Coastal Plain Holocene Sedimentary Evolution (Brazil): A Contribution

et al. 2017

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Sedimentological and radiocarbon investigations are part of an ongoing research on the Bay-head delta of northeast Guanabara Bay, Rio de Janeiro State. Sediment accumulation indicates that the Holocene infill of the bay-head delta started around 8.2 kyr BP and was not in pace with the eustatic sea-level rise. Sediment accumulation was faster during the transgressive phase (0.56 cm.yr -1 ). However, during the regressive phase, progradation driven by baselevel fall was predominant over vertical sediment accumulation (0.02 cm.yr -1 ). Based on coring, three sedimentary units were defined: fluvial sands (U1), estuarine deposits (U2) and fluvial mud (U3).

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“…a BP in the MB (Kostecki et al . ). The lake marl succession is followed by an organic‐rich peaty gyttja that turns into a more solid peaty layer towards the east (Figs ).…”

Section: Discussionmentioning

confidence: 97%

Late Pleistocene and early Holocene drainage events in the eastern Fehmarn Belt and Mecklenburg Bight, SW Baltic Sea

Heinrich

Anders

Schwarzer

2017

Boreas

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The Fehmarn Belt is a key area for the Late Pleistocene and Holocene development of the Baltic Sea as it was a passage for marine and fresh water during its different stages. The pre‐Holocene geological development of this area is presented based on the analysis of seismic profiles and sedimentary gravity cores. Late Pleistocene varve sediments of the initial Baltic Ice Lake were identified. An exceptionally thick varve layer, overlain by a section of thinner varves with convolute bedding in turn covered by undisturbed varves with decreasing thicknesses is found in the Fehmarn Belt. This succession, along with a change in varve geochemistry, represents a rapid ice‐sheet withdrawal and increasingly distal sedimentation in front of the ice margin. Two erosional unconformities are observed in the eastern Mecklenburg Bight, one marking the top of the initial Baltic Ice Lake deposits and the second one indicating the end of the final Baltic Ice Lake. These unconformities join in Fehmarn Belt, where deposits of the final Baltic Ice Lake are missing due to an erosional hiatus related to a lake‐level drop during its final drainage. After this lake‐level drop, a lowstand environment represented by river deposits developed. These deposits are covered by lake marls of Yoldia age. Tilting of the early glacial lake sediments indicates a period of vertical movements prior to the onset of the Holocene. Deposits of the earliest stages of the Baltic Sea have been exposed by ongoing erosion in the Fehmarn Belt at the transition to the Mecklenburg Bight.

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The evolution of the Mecklenburg Bay environment in the Holocene in the light of multidisciplinary investigations of the sediment cores

Cited by 13 publications

References 36 publications

The foraminiferal record in the Holocene evolution of the Mecklenburg Bay (south-western Baltic Sea)

The foraminiferal record in the Holocene evolution of the Mecklenburg Bay (south-western Baltic Sea)

Northeast Guanabara Bay and Coastal Plain Holocene Sedimentary Evolution (Brazil): A Contribution

Late Pleistocene and early Holocene drainage events in the eastern Fehmarn Belt and Mecklenburg Bight, SW Baltic Sea

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